Programmable logic controller (PLC)



FIG. 1 is a front elevational view of a programmable logic controller (PLC) showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is left-side elevation view thereof; and,

FIG. 7 is a perspective view thereof.

The broken line portion of the figure drawings is included to show unclaimed subject matter only and forms no part of the claimed design. 

CLAIM The ornamental design for a programmable logic controller (PLC), as shown and described. 